Feasibility Study of Lithium Slag as Filler in Papermaking
The physical and chemical properties of two types of lithium slag were investigated,and the effect of lithium slag content on paper proper-ties was explored.The results showed that the micro-morphology of lithium slag was irregular gravel-like,with a large internal surface area of the po-rous structure.The particle size of lithium slag was large and widely distributed.The brightness of 1# lithium slag and 2# lithium slag was 66.4％and 76.5％,respectively.The brightness of the paper was reduced after filling the lithium slag.The strength performance of the paper filled with lithium slag was better than the paper filled with PCC.At 18 wt％filler content,the tensile index of the paper filled with 1# lithium slag was 38％higher than that of the paper filled with PCC.At 12 wt％filler content,the tear index of the paper filled with 2# lithium slag was 41％higher than that of the paper filled with PCC.In addition,the water resistance of the paper filled with 2# lithium slag was comparable to that of the paper filled with PCC,which could meet the requirements of water resistance of paper.Therefore,lithium slag could be used in packaging paper with lower whiteness requirements.
lithium slagpapermaking fillertensile indextearing index
万方数据
维普
